Amazon operates an "associate" programme that allows websites to earn up to a 15% referral fee for purchases made through links to the retailer.

BBC: Amazon denies backing Israel

It has also raised the risk profile across the region, compounding "a wider mood of instability across the Saharan region, " says Jon Marks, associate fellow on the Middle East and north Africa programme at Chatham House.

CNN: Oil and gas industry reviews security

Neil Partrick is a visiting fellow at the Gulf Programme at the London School of Economics and associate fellow at the Royal United Services Institute for Defence and Security Studies (RUSI) in London.

BBC: Middle East